By clicking "Authorize QXL Online to Connect to your QuickBooks Online" open authorization screen. You need to authorize your company file to work with QXL Online.You need to enable popup from your browser.

Enter your QuickBooks User ID & Password, then click "Sign In".

For QuickBooks Online Simple Start/Essentials/Plus Account

Select company file which you want to use with QXL Online. If you have multiple company files.

For ProAdvisor Account

Select "Company/Firm" from the list. Click "Add app to firm"

After selecting the company, please click the "Authorize" button. It will allow "QXL for QuickBooks Online" to access your QuickBooks Online company data file.

After successful authorization, it will return back to QXL Online page as connected status. You can close this window.